Every good quality runs into a defect; economy borders on avarice, the generous are not far from the prodigal, the brave man is close to the bully; he who is very pious is slightly sanctimonious; there are just as many vices to virtue as there are holes in the mantle of Diogenes.

To rove about, musing, that is to say loitering, is, for a philosopher, a good way of spending time, especially in that kind of mock rurality, ugly but odd, and partaking of two natures, which surrounds certain large cities, particularly Paris.

A saint addicted to excessive self-abnegation is a dangerous associate; he may infect you with poverty, and a stiffening of those joints which are needed for advancement-in a word, with more renunciation than you care for-and so you flee the contagion.

Ma vie est une énigme dont ton nom est le mot. (My life is an enigma, of which your name is the word.)

Reality in strong doses frightens.

It is nothing to die. It is frightful not to live.

Labor is life; thought is light.